Power tube bus surface lapping device

Abstract

This utility model discloses a surface finishing device for power busbars, belonging to the field of busbar technology. It includes a base, a support on the base, a turntable on the support, a drive structure on the support for rotating the turntable, and a grinding belt on the turntable. The turntable is fitted over the busbar. The base and the busbar can move relative to each other along the direction of the busbar. Two grinding belt fixing structures are respectively provided at opposite ends of the turntable. Each grinding belt fixing structure includes a fixing post and a tensioning mechanism. The grinding belt is a ring structure, fitted over the busbar, perpendicular to the busbar. The inner sides of its two sides contact the opposite sides of the busbar and arc-shapedly wrap around the corresponding sides of the busbar. Its two ends are respectively fitted onto the two fixing posts. The tensioning mechanism brings the two sides of the grinding belt closer together and tensions them, ensuring the grinding belt is tightly attached to the busbar. The grinding belt has a large wrapping angle and a large contact area with the busbar, resulting in fast finishing speed. Using only one grinding belt, the structure is simple and easy to maintain.

Description

Technical Field

[0001] This utility model belongs to the field of busbar technology, and specifically relates to a device for precision grinding of the surface of power busbars. Background Technology

[0002] Busbars are one of the key equipment (materials) in power transmission and transformation systems. They are mainly used in my country's power construction projects as conductors connecting power grid transmission lines and substation transformers, as jumpers in transmission lines, as connecting conductors in power equipment, and as current-carrying conductors in high-current DC de-icing devices. They are a new type of conductor that replaces traditional rectangular, channel, and rod-shaped busbars and flexible conductors. As one of the key equipment (materials) in power transmission and transformation systems, they play a vital role in the safe and reliable operation of power transmission and transformation systems and power equipment.

[0003] The busbars are made of aluminum alloy, with a hollow tubular structure, glossy surface, beautiful appearance, and uniform dimensions. The outer diameter ranges from φ60mm to φ300mm; the wall thickness ranges from 3mm to 12mm, and the longest single length can reach 20 meters.

[0004] Aluminum alloys are generally stable, but after a period of time, dust, oxidation, or various defects (such as scratches, burrs, pits, and oil stains) will accumulate on the surface of the busbar, making it dull and unsightly, thus affecting its visual appeal. Therefore, the surface of the busbar can be polished during manufacturing, a process that can be achieved using a polishing machine.

[0005] For example, patent application number CN202021947396.8 discloses a sanding disc assembly, including a power unit, an output drive wheel, a polishing disc, and two sanding belts. The power unit and the polishing disc are both mounted on a frame. The polishing disc includes a sanding turntable. The output drive wheel is connected to the power output shaft of the power unit and is driven by the sanding turntable via a transmission belt. The peripheral wall of the sanding turntable has grooves for the transmission belt to be embedded in, and the center of the sanding turntable has a groove for the surface to be polished. The machine includes a through hole through which the workpiece passes; it also includes a large gear ring fixedly connected to the frame and two planetary gears rotatably connected to the surface of the sanding turntable. Both planetary gears are meshed with the outer gear teeth of the large gear ring. The sanding turntable is also provided with two sets of driving pulleys and driven pulleys for the sanding belts to be fitted. The two driving pulleys are coaxial with the two planetary gears and are connected for transmission. A grinding gap is provided between the two sanding belts for the workpiece to pass through. The grinding gap is aligned and connected with the through hole.

[0006] For example, patent application number CN202410888433.9 discloses a polishing machine for polishing irregularly shaped bent pipes, including: a machine base, the machine base having a drive component inside, and a support on the machine base; a turntable, rotatably connected to the support via bearings and driven to rotate by the drive component inside the machine base, the turntable having a central hole for parts to pass through, and two drive wheel sets on one side of the turntable; two grinding belts, each driven by the two drive wheel sets, forming two straight sections symmetrical about the center hole, with a grinding gap between the two straight sections for grinding parts; wherein, the turntable also has two tension rollers, respectively disposed inside the two grinding belts, the tension rollers being configured to slide radially away from the center of the turntable under the action of centrifugal force, so as to tension the grinding belts; the turntable also has a brake roller capable of moving radially synchronously with the tension rollers, the brake roller being configured to brake the turntable when the centrifugal force decreases.

[0007] In existing technologies, polishing is typically achieved using two parallel polishing strips (located on opposite sides of the tube busbar). This method has the following problems:

[0008] 1. The small contact area between the grinding belt and the busbar results in a slow grinding speed;

[0009] 2. The structure is complex and difficult to maintain. Utility Model Content

[0010] To address the aforementioned problems, this utility model provides a surface grinding device for power busbars. The grinding belt has a large wrapping angle with the busbar, a large contact area, and a fast grinding speed. It uses only one grinding belt, resulting in a simple structure and easy maintenance. The technical solution is as follows:

[0011] This utility model embodiment provides a surface finishing device for power busbars. The device includes a base 2, a support 3 on the base 2, a turntable 4 rotatably mounted on the support 3, a drive structure 5 on the support 3 for driving the turntable 4 to rotate, and a grinding belt 6 on the turntable 4. The turntable 4 is fitted over the busbar 1. The base 2 and the busbar 1 can move relative to each other along the direction of the busbar 1. Two grinding belt fixing structures 7 are respectively provided at opposite ends of the turntable 4. The grinding belt fixing structure 7 includes a fixing post 71 and a tensioning mechanism. The grinding belt 6 is a single ring structure, fitted over the busbar 1, perpendicular to the busbar 1. The inner sides of its two sides contact the opposite sides of the busbar 1 and arc-shapedly wrap the corresponding sides of the busbar 1. Its two ends are respectively fitted over the two fixing posts 71. The tensioning mechanism brings the two sides of the grinding belt 6 closer together and tensions them so that the grinding belt 6 is tightly attached to the busbar 1.

[0012] Specifically, in this embodiment of the present invention, the base 2 is a movable base that can move along the direction of the busbar 1.

[0013] In this embodiment of the utility model, the busbar 1 is arranged along the front-to-back direction; the turntable 4 is a ring structure and is coaxially arranged with the busbar 1; the base 2 includes a movable seat 21, a vertically arranged column 22 on the movable seat 21, and a horizontal beam 23 on the column 22 that can be adjusted up and down. The column 22 is located on the left or right side of the busbar 1, the horizontal beam 23 is arranged along the left and right direction and is located on the side of the column 22 close to the busbar 1, and the top of the bracket 3 is adjustable left and right on the horizontal beam 23.

[0014] In this embodiment of the utility model, the bracket 3 includes an annular portion and a connecting portion at its top. The connecting portion is connected to the crossbeam 23. The annular portion is sleeved on the outside of the busbar 1 and is coaxially arranged with the busbar 1. The turntable 4 is rotatably disposed on the front or rear side of the annular portion. The driving structure 5 is disposed on the connecting portion.

[0015] In this embodiment of the invention, the turntable 4 is a toothed disc, with an annular slide rail 8 coaxially arranged on its inner side, located adjacent to the front or rear of the annular portion. The inner diameter of the annular portion is smaller than the inner diameter of the turntable 4 and larger than the outer diameter of the tube busbar 1. Multiple support wheels 9 are arranged on its inner edge and on the inner side of the annular slide rail 8. The multiple support wheels 9 are located on the same circle concentric with the turntable 4. The support wheels 9 are arranged in the front-rear direction, are coplanar with the turntable 4, and have a first annular groove on their circumference that mates with the annular slide rail 8. The inner side of the annular slide rail 8 is slidably disposed in the first annular groove of the support wheel 9. The driving structure includes a motor 51 and a gear 52. The gear 52 is rotatably disposed on the connecting part, is arranged in the front-rear direction, meshes with the top or upper part of the turntable 4, and is connected to the motor 51 for transmission. The motor 51 is disposed on the connecting part, located above the turntable 4, and is located on the side of the connecting part away from the turntable 4.

[0016] Specifically, in this embodiment of the present invention, there are three support wheels 9, which are located on the left, right and top of the inner edge of the annular slide rail 8, respectively; the gear 52 is located on the top of the outer edge of the turntable 4 and is directly above the top support wheel 9.

[0017] Furthermore, the grinding belt fixing structure 7 in this embodiment of the present invention also includes a fixing seat 10. Two fixing seats 10 are respectively located at opposite ends of the turntable 4 and are located on the side of the turntable 4 away from the support 3. A fixing column 71 and two tensioning mechanisms are located on the fixing seats 10 at the corresponding ends. The fixing seats 10 can be adjusted along the radial direction of the turntable 4.

[0018] In this embodiment of the invention, the fixed column 71 has a second annular groove coaxially provided on its circumferential surface to cooperate with the grinding belt 6, and the end of the grinding belt 6 is sleeved on the second annular groove; the tensioning mechanism includes two tensioning members 73, each tensioning member 73 including a rotating arm 31, a limiting protrusion 32, and a tensioning rod 33, the middle part of the rotating arm 31 being rotatably mounted on the fixed seat 10 via a front-rear rotating shaft 74, and the fixed column 71 being located between the two rotating arms 31; the tensioning rod 33 is arranged in the front-rear direction, located at the inner end of the rotating arm 31, between the fixed column 71 and the busbar 1, and has a second annular groove coaxially provided on its circumferential surface to cooperate with the grinding belt 6. The grinding belt 6 has a third annular groove; two tensioning rods 33 press against the outer sides of the two sides of the grinding belt 6, causing the two sides of the grinding belt 6 to bend inward, with or without a tensioning ring 72 between them; the limiting protrusion 32 is fixed on the fixing seat 10, located on the side of the outer end of the rotating arm 31 away from the fixing post 71; if the tensioning ring 72 is provided, the two ends of the tensioning ring 72 are respectively sleeved on the two tensioning rods 33, and there is a gap between the limiting protrusion 32 and the outer end of the rotating arm 31; if the tensioning ring 72 is not provided, the side of the outer end of the rotating arm 31 away from the fixing post 71 rests against the limiting protrusion 32.

[0019] Specifically, in this embodiment of the present invention, the tensioning ring 72 is a cable tie.

[0020] Specifically, in this embodiment of the present invention, the busbar 1 is an aluminum alloy busbar; the polishing belt 6 is a scouring pad with a width of 0.5-2.0cm.

[0021] The beneficial effects of the technical solution provided by this utility model embodiment are as follows: This utility model embodiment provides a surface grinding device for power busbars, which has a large covering angle of the grinding belt on the busbar, a large contact area, and a fast grinding speed; it uses only one grinding belt, has a simple structure, and is easy to maintain. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the surface grinding device for power busbars in this embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure on the other side of the power busbar surface finishing device;

[0024] Figure 3 This is a structural diagram of the combination of the support, turntable, grinding belt, and grinding belt fixing structure;

[0025] Figure 4 yes Figure 3 A magnified view of a portion of the image;

[0026] Figure 5 This is a structural diagram of the combination of tensioning rod, tensioning ring belt and grinding belt.

[0027] In the diagram: 1. Busbar, 2. Base, 3. Bracket, 4. Turntable, 5. Drive structure, 6. Grinding belt, 7. Grinding belt fixing structure, 8. Circular slide rail, 9. Support wheel, 10. Fixing seat;

[0028] 21. Movable seat; 22. Upright column; 23. Crossbeam;

[0029] 31 Rotating arm, 32 Limiting protrusion, 33 Tensioning rod;

[0030] 51 Motor, 52 Gear;

[0031] 71 Fixed post, 72 Tensioning ring, 73 Tensioning element, 74 Rotating shaft. Detailed Implementation

[0032] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0033] Example 1

[0034] See Figure 1-5 Example 1 provides a surface grinding device for power busbars, which includes a base 2, a bracket 3, a turntable 4, a drive structure 5, and a grinding belt 6.

[0035] Among them, the busbar 1 is arranged in the front and back direction and is installed on the corresponding structure (such as the conveying structure or the support).

[0036] The base 2 can be a movable base or a fixed base, and the base 2 and the busbar 1 can move relative to each other along the direction of the busbar 1. Specifically, the busbar 1 can be fixed while the base 2 moves; or the base 2 can be fixed while the busbar 1 moves. Specifically, if the base 2 is an adjustable base, the turntable 4 can be adjusted in the left-right and vertical directions.

[0037] The turntable 4 rotates (via the support wheel 9) and is located on the front or rear side of the bracket 3. It is a ring structure and is sleeved on the outside of the busbar 1. It is coaxially arranged with the busbar 1. Specifically, it is a toothed disc. A ring slide rail 8 is coaxially arranged on its inner side, and two grinding belt fixing structures 7 are respectively provided at its opposite ends.

[0038] The bracket 3 is mounted on the base 2 and supports the turntable 4, the drive structure 5, and the grinding belt 6. Specifically, the bracket 3 includes an annular portion and a connecting portion at its top. The connecting portion is connected to the base 2 and is rectangular, isosceles trapezoidal with a smaller top and a larger bottom. The annular portion is fitted around the busbar 1 and is coaxial with the busbar 1, forming an annular structure. The turntable 4 is rotatably positioned in front of or behind the annular portion. The inner diameter of the annular portion is smaller than the inner diameter of the turntable 4 but larger than the outer diameter of the busbar 1. Multiple (3-6) support wheels 9 are provided on its inner edge and inside the annular slide rail 8. The multiple support wheels 9 are located on the same circle concentric with the turntable 4. The support wheels 9 are arranged in a front-rear direction, are coplanar with the turntable 4, and have a first annular groove on their circumference that mates with the annular slide rail 8. The inner side of the annular slide rail 8 slides within the first annular groove of the support wheel 9. The turntable 4 is located adjacent to the front or rear of the annular portion.

[0039] The drive structure 5, used to drive the turntable 4 to rotate, is located on the connecting part and specifically includes a motor 51 and a gear 52. Specifically, the gear 52 is rotatably mounted on the connecting part, arranged in the front-to-back direction, meshing with the top or upper part of the turntable 4, and is drively connected to the motor 51 (specifically, coaxially fixed to the output shaft of the motor 51). The motor 51 is located on the connecting part, above the turntable 4, on the side of the connecting part away from the turntable 4, and is specifically arranged in the front-to-back direction. Specifically, a fixing plate is provided on the top of the connecting part in the front-to-back direction, and the motor 51 is fixed to the lower side of the fixing plate. Preferably, the motor 51 is a servo motor.

[0040] The grinding belt fixing structure 7 includes fixing posts 71 and a tensioning mechanism. The fixing posts 71 are arranged in the front-to-back direction and are located at both ends of one diameter of the turntable 4. There is one grinding belt 6, which is a ring structure (forming two sides). It is fitted over the outer side of the busbar 1, with its surface perpendicular to the busbar 1. The inner sides of its two sides contact the opposite sides of the busbar 1 and arc-shapedly wrap around the corresponding sides of the busbar 1 (the wrapping angle is usually greater than 45°). Its two ends are respectively fitted onto two fixing posts 71. The tensioning mechanism brings the two sides of the grinding belt 6 closer together and tensions them, so that the grinding belt 6 is tightly attached to the busbar 1. The busbar 1 is located between the two grinding belt fixing structures 7.

[0041] Example 2

[0042] Example 2 provides a surface finishing device for power busbars, which has the same structure as that of Example 1, except that the base 2 in this example is a movable base that can move back and forth.

[0043] Example 3

[0044] See Figure 1-2Example 3 provides a surface finishing device for power busbars, whose structure is basically the same as that of Example 2, except that: the base 2 in this example includes a movable seat 21, a column 22, and a crossbeam 23, and the bottom of the base 2 has multiple (specifically four) wheels. The column 22 is located on the left or right side of the busbar 1 and is fixed to the movable seat 21. The crossbeam 23 is adjustable up and down (fixed by adjusting seats and bolts) on the column 22, and is arranged in the left and right direction, located on the side of the column 22 closest to the busbar 1 (left or right). The top of the bracket 3 (specifically the connecting part) is adjustable left and right (fixed by adjusting seats and bolts) on the crossbeam 23. Specifically, both the column 22 and the crossbeam 23 are square tubes.

[0045] Example 4

[0046] See Figure 1-3 Example 4 provides a surface finishing device for power busbars, which has a structure that is basically the same as that of Example 1, except that: in this example, there are three support wheels 9, which are located on the left, right and top sides of the inner edge of the annular slide rail 8, respectively. The gear 52 is located at the top of the outer edge of the turntable 4 and is directly above the top support wheel 9.

[0047] Example 5

[0048] See Figure 1-4 Example 5 provides a surface finishing device for power busbars, whose structure is basically the same as that of Example 1, except that the grinding belt fixing structure 7 in this example also includes a fixing seat 10. Two fixing seats 10 are respectively located at opposite ends of the turntable 4, and are located on the side of the turntable 4 away from the support 3. A fixing column 71 and two tensioning mechanisms are located on the corresponding fixing seats 10. The fixing seats 10 can be adjusted radially along the turntable 4. Specifically, the fixing seat 10 is an arc-shaped plate that cooperates with the turntable 4. It is fixed to the turntable 4 by two bolts (arranged in the front-back direction), and has elongated holes (arranged radially along the turntable 4) for the two bolts to pass through. Loosening the bolts can adjust the fixing seat 10, thereby tensioning the grinding belt 6. In addition, the pressure of the grinding belt 6 on the surface of the busbar 1 can also be controlled by adjusting the position of the fixing seat 10. Excessive pressure will cause excessive wear on the surface of the busbar 1, while insufficient pressure will affect the grinding effect. Therefore, it can be reasonably adjusted according to the surface condition of the busbar 1.

[0049] Example 6

[0050] See Figure 1-4Example 6 provides a surface finishing device for power busbars, whose structure is basically the same as that of Example 5, except that: in this example, the fixed column 71 has a second annular groove coaxially provided on its circumferential surface to cooperate with the grinding belt 6, and the end of the grinding belt 6 is sleeved on the second annular groove. The tensioning mechanism includes two tensioning elements 73, etc. Preferably, the two tensioning elements 73 are symmetrically arranged with respect to the line connecting the fixed column 71 and the center of the turntable 4. The tensioning element 73 includes a rotating arm 31, a limiting protrusion 32, and a tensioning rod 33, etc. The two rotating arms 31 are distributed in a figure-eight shape, and the distance between them gradually increases from the outside to the inside. The middle part of the rotating arm 31 is rotatably mounted on the fixed seat 10 through a front-back rotating shaft 74, and the fixed column 71 is located between the two rotating arms 31. The tensioning rod 33 is arranged in the front-back direction, located at the inner end of the rotating arm 31, between the fixed column 71 and the busbar 1, and has a third annular groove coaxially provided on its circumferential surface to cooperate with the grinding belt 6. Two tensioning rods 33 press against the outer sides of the two sides of the grinding belt 6, causing the two sides of the grinding belt 6 to bend inward. A tensioning ring 72 may or may not be provided between them. The limiting protrusion 32 is fixed on the fixed base 10. It is located on the side of the outer end of the rotating arm 31 away from the fixed post 71. Specifically, it is a round rod arranged in the front-back direction.

[0051] If a tensioning ring 72 is provided, its two ends are respectively fitted onto the two tensioning rods 33, and there is a gap between the limiting protrusion 32 and the outer end of the rotating arm 31. Specifically, the tensioning ring 72 is a cable tie. The tensioning of the grinding belt 6 can be achieved by adjusting the size of the tensioning ring 72. Specifically, the tensioning ring 72 is perpendicular to the line connecting the center of the fixed post 71 and the center of the turntable 4.

[0052] If the tensioning ring 72 is not provided, the outer end of the rotating arm 31, away from the fixed post 71, rests against the limiting protrusion 32. The grinding belt 6 is tensioned by adjusting the fixed seat 10.

[0053] Example 7

[0054] Example 7 provides a surface finishing device for power busbars, the structure of which is basically the same as that of Example 1, except that the busbar 1 in this example is an aluminum alloy busbar.

[0055] Example 8

[0056] Example 8 provides a surface grinding device for power busbars, which has the same structure as that of Example 1, except that the grinding belt 6 in this example is a scouring pad with a width of 0.5-2.0cm (preferably 0.7-1.0cm).

[0057] Example 9

[0058] Example 9 provides a surface finishing device for power busbars, whose structure is basically the same as that of Example 1, except that: in this example, the turntable 4 is located adjacent to the front side of the support 3, the gear 52 is located on the front side of the support, and the motor 51 is located on the rear side of the support 3. The fixing column 71 and the tensioning mechanism are located on the front side of the turntable 4, and the grinding belt 6 is located adjacent to the front of the turntable 4. Assuming that the two grinding belt fixing structures 7 are located at the upper and lower ends of the turntable 4 respectively, the grinding belt 6 is vertically arranged, with the upper part (above the busbar 1) and the lower part (below the busbar 1) of its left side both bent to the right, and the upper part and the lower part of its right side both bent to the left. The two rotating arms 31 gradually approach or move away from each other from top to bottom, and the two tensioning rods 33 are located on the left and right sides of the grinding belt 6 respectively.

[0059] Example 10

[0060] Example 10 provides a surface finishing device for power busbars, the performance indicators of which are:

[0061] Supported diameter range: grinding working outer diameter of 300mm and below, length range: 0.5m-20m aluminum tube grinding.

[0062] Grinding efficiency: 2 meters / minute (mobile).

[0063] Equipment stability: Continuous operation time > 10h.

[0064] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A surface grinding device for a power busbar, comprising a base (2), a support (3) on the base (2), a turntable (4) rotatably mounted on the support (3), a drive structure (5) on the support (3) for driving the turntable (4) to rotate, and a grinding belt (6) on the turntable (4), wherein the turntable (4) is fitted over the busbar (1); characterized in that, The base (2) and the busbar (1) can move relative to each other along the direction of the busbar (1). The turntable (4) has two grinding belt fixing structures (7) at opposite ends. The grinding belt fixing structure (7) includes a fixing post (71) and a tensioning mechanism. The grinding belt (6) is a single ring structure that is sleeved on the outside of the busbar (1) and is perpendicular to the busbar (1). The inner sides of its two sides contact the opposite side of the busbar (1) and wrap the corresponding side of the busbar (1) in an arc shape. Its two ends are sleeved on the two fixing posts (71). The tensioning mechanism brings the two sides of the grinding belt (6) closer to each other and tensions them so that the grinding belt (6) is tightly attached to the busbar (1).

2. The power busbar surface finishing device according to claim 1, characterized in that, The base (2) is a movable base that can move along the direction of the busbar (1).

3. The power busbar surface finishing device according to claim 2, characterized in that, The busbar (1) is arranged in the front-to-back direction; the turntable (4) is a ring structure and is arranged coaxially with the busbar (1); the base (2) includes a movable seat (21), a vertically arranged column (22) on the movable seat (21) and a horizontal beam (23) on the column (22) that can be adjusted up and down. The column (22) is located on the left or right side of the busbar (1), the horizontal beam (23) is arranged in the left-to-right direction and is located on the side of the column (22) close to the busbar (1), and the top of the bracket (3) is arranged on the horizontal beam (23) in a left-to-right direction.

4. The power busbar surface finishing device according to claim 3, characterized in that, The bracket (3) includes an annular part and a connecting part at its top. The connecting part is connected to the crossbeam (23). The annular part is sleeved outside the busbar (1) and is coaxial with the busbar (1). The turntable (4) is rotatably located on the front or rear side of the annular part. The driving structure (5) is located on the connecting part.

5. The power busbar surface finishing device according to claim 4, characterized in that, The turntable (4) is a toothed disc, and an annular slide rail (8) is coaxially arranged on its inner side, located adjacent to the front or rear of the annular part; the inner diameter of the annular part is smaller than the inner diameter of the turntable (4) and larger than the outer diameter of the tube busbar (1), and multiple support wheels (9) are arranged on its inner edge and on the inner side of the annular slide rail (8); the multiple support wheels (9) are located on the same circle concentric with the turntable (4); the support wheels (9) are arranged in the front-rear direction, are coplanar with the turntable (4), and are arranged on their circumference with the annular slide rail (8). The first annular groove of the track (8) is fitted; the inner side of the annular slide rail (8) is slidably disposed in the first annular groove of the support wheel (9); the driving structure includes a motor (51) and a gear (52); the gear (52) is rotatably disposed on the connecting part, is arranged in the front-back direction, meshes with the top or upper part of the turntable (4), and is connected to the motor (51) for transmission; the motor (51) is disposed on the connecting part, is located above the turntable (4), and is located on the side of the connecting part away from the turntable (4).

6. The power busbar surface finishing device according to claim 5, characterized in that, The number of the support wheels (9) is three, and the three support wheels (9) are located on the left, right and top of the inner edge of the annular slide rail (8); the gear (52) is located on the top of the outer edge of the turntable (4) and is located directly above the top support wheel (9).

7. The power busbar surface finishing device according to claim 3, characterized in that, The grinding belt fixing structure (7) also includes a fixing seat (10). The two fixing seats (10) are respectively located at opposite ends of the turntable (4) and are located on the side of the turntable (4) away from the support (3). A fixing column (71) and two tensioning mechanisms are located on the fixing seats (10) at the corresponding ends. The fixing seats (10) can be adjusted along the radial direction of the turntable (4).

8. The power busbar surface finishing device according to claim 7, characterized in that, The fixed column (71) has a second annular groove coaxially provided on its circumferential surface to cooperate with the grinding belt (6), and the end of the grinding belt (6) is sleeved on the second annular groove; The tensioning mechanism includes two tensioning elements (73). Each tensioning element (73) includes a rotating arm (31), a limiting protrusion (32), and a tensioning rod (33). The middle part of the rotating arm (31) is rotatably mounted on the fixed seat (10) via a front-to-back rotating shaft (74). The fixed column (71) is located between the two rotating arms (31). The tensioning rod (33) is arranged in the front-to-back direction and is located at the inner end of the rotating arm (31). It is located between the fixed column (71) and the tube busbar (1). A third annular groove that mates with the grinding belt (6) is coaxially provided on its circumference. The two tensioning rods (33) press against the outer sides of the two sides of the grinding belt (6), causing the two sides of the grinding belt (6) to bend inward. A tensioning ring (72) may or may not be provided between them. The limiting protrusion (32) is fixed on the fixed base (10) and is located on the side of the outer end of the rotating arm (31) away from the fixed column (71). If a tensioning ring (72) is provided, the two ends of the tensioning ring (72) are respectively sleeved on the two tensioning rods (33), and there is a gap between the limiting protrusion (32) and the outer end of the rotating arm (31). If the tensioning ring (72) is not provided, the side of the outer end of the rotating arm (31) away from the fixed column (71) rests against the limiting protrusion (32).

9. The power busbar surface finishing device according to claim 8, characterized in that, The tensioning ring (72) is a cable tie.

10. The power busbar surface finishing device according to claim 1, characterized in that, The busbar (1) is an aluminum alloy busbar; the polishing belt (6) is a scouring pad with a width of 0.5-2.0cm.

Images